Who we are
Established in 2000, DecisionOne is a BI design consultancy set up by Lawrence Corr. We believe that collaborative data design known as modelstorming dramatically improves how organisations understand their data and gain valuable business insight from it.

What we do
We help organisations create better BI solutions. We do that through modelstorming workshops and public training courses worldwide.

Agile Data Warehouse Design eBook Now Available


When and Where
Our final 2017 Agile Data Warehouse Design course in Leeds, 5-7 December is sold out but there is a wait list and booking is open for London, 12-14 March 2018 View our 2018 worldwide training schedule for further dates and locations.


Why work with us

See who our clients are and what they say about us.

How can we help you

Book on one of our public courses or contact us to organise on-site training, design reviews or a modelstorming workshop.